Sori hemispheroid, in 2-3 series on each side along the costules, without indusium.
孢子囊群圆形,沿中脉两侧各排成2-3行,无囊群盖。
英语百科
Sorus
A sorus (pl. sori) is a cluster of sporangia (structures producing and containing spores) in ferns and fungi. This New Latin word is from Ancient Greek σωρός (sōrós ‘stack, pile, heap’).
In fungi and lichens, the sorus is surrounded by an external layer. In some red algae it may take the form of a depression into the thallus.